Single carrier/multi-carrier share receiver and signal processing method thereof

Abstract

The invention provides a single carrier/multi-carrier share receiver which comprises a discrete Fourier transform unit, a frequency domain equalizer, an anti-discrete Fourier transform unit and an intersymobl interference eliminating unit, wherein the discrete Fourier transform unit is used for carrying out discrete Fourier transformation on receiving signals to generate frequency domain signals;the frequency domain equalizer is used for evenly calculating the frequency domain signals to generate equalized frequency domain signals; the anti-discrete Fourier transform unit is used for carrying out anti-discrete Fourier transform calculation on the equalized frequency domain signals to generate equalized time domain signals; and the intersymobl interference eliminating unit is used for eliminating intersymobl interferences of the equalized time domain signals to generate intersymobl interference eliminated signals.

Description

technical field [0001] The present invention relates to a single-carrier / multi-carrier shared receiver, in particular to a single-carrier / multi-carrier shared receiver with an intersymbol interference elimination unit and a signal processing method thereof. Background technique [0002] In the receiver of a single-carrier system, a decision feedback equalizer (decision feedback equalizer) is usually used to eliminate channel effects and improve problems such as deep fading that the channel may encounter at certain frequency points. However, When the channel length is very long, the decision feedback equalizer needs very many order coefficients and greatly increases the computational complexity. [0003] Therefore, in some single-carrier / multi-carrier sharing receivers, in order to reduce the computational complexity, the single-carrier signal will use the frequency-domain equalizer (frequency-domain equalizer) to perform the equalization operation like the multi-carrier inst...

AI Technical Summary

Problems solved by technology

[0002] In the receiver of a single-carrier system, a decision feedback equalizer (decision feedback equalizer) is usually used to eliminate channel effects and improve problems such as deep fading that the channel may encounter at certain frequency points. However, When the channel length is very long, the decision feedback equalizer needs very many order coefficients and greatly increases the computational complexity

[0003] Therefore, in some single-carrier / multi-carrier sharing receivers, in order to reduce the computational complexity, the single-carrier signal will use the frequency-domain equalizer (frequency-domain equalizer) to perform the equalization operation like the multi-carrier instead of using the traditional decision Feedback equalizer, however, because the frequency domain equalizer cannot directly use the decision feedback (decision feedback), so the performance will be similar to a linear equalizer (linear equalizer), and cannot effectively eliminate inter-symbol interference (Inter-Symbol Interference, ISI)

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